Home / 18,268.16-27,403.98-5,120.49

Finding the Fourth Proportional to 18,268.16, 27,403.98 and 5,120.49

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Solution

The fourth proportional to 18,268.16, 27,403.98 and 5,120.49 is: 7,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,268.16 : 27,403.98 = 5,120.49 : x
  2. Step 2: Convert to fraction form
    18,268.16/27,403.98 = 5,120.49/x
  3. Step 3: Cross multiply
    18,268.16x = 27,403.98 × 5,120.49
  4. Step 4: Simplify right side
    18,268.16x = 140,321,805.55
  5. Step 5: Solve for x
    x = 140,321,805.55/18,268.16
  6. Step 6: Final answer
    x = 7,681.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.